Lamp-support



M. OZLEK.

LAMP SUPPORT.

APPLICATION FILED MAY 20. 1919.

Patented Feb. 10, 1920.

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LAMP SUPPORT,

APPLICATION FILED MAY20, 1919.

1,330,336. Patented Feb. 10,1920.

2 SHEETS-SHEET 2- ncense.

LIOERIS OZLEK, {3F PHILADELPHIA,PENNSYLVANIA,

LAMP-SUPPORT;

Application filed Kay 29 To all whom it may concern:

Be it known that I, Monnrs OZLEK, acitizen of the United States, residing at Philadelphia, in the county of Philadelphia and 'State of Pennsylvania, have invented certain new and useful Improvements in Lamp- Supports, of which the following is a specific-ation.

One object of my invention is to provide an improved cluster topfor standard lamps which can be quickly and easily made of metal, Wood or other suitable material.

Another object is to construct niy improved cluster top in such manner that it will be neat and ornamental in appearance and efficiently serve for the purpose 1nten ded.

mounted thereon and so that the parts which hold the shade will not readily become worn.

These objects, and other advantageous ends which will be described hereinafter,l attain in the following manner, reference being had 'to the accompanying drawings in which v Figure 1 is a sectional elevation showing my improved cluster top attached to a lamp standard and illustrating how the same supports a shade,

Fig. 2 is a side elevation of my improved one-piece cluster top,

Fig. 3 is a sectional elevation taken on the line 33 of Fig. 2, i

Fig. 4 is an inverted plan view showing my improved cluster top with the shaderetaining means thereon,

Fig. 5 is a fragmentary section taken on the line 55 of Fig. 1,

1 Fig. '6 is a perspective view ofa spring tension plate which forms a part of my invention,

Fig. 7 is an enlarged sectional view taken on the line 7 '7 of Fig. 6, and

Figs. 8 and 9 are perspective views showing modified forms of my improved tension plate;

andstops short of the top surface 13. Holes Specification of Letters Patent.

Referring to Figs. 1 to 7 inclusive, 10 rep drical cavity 11 and into these holes 1 1 are screw threaded sleeve coupl ngs 15 to wh ch theelectric lamp sockets 16 are screwed and a secured by the usual set screws 17. The holes 1 1 intersectthe cav tyill between the; we surface 12 and the innermost surface 18.

A hollow standard 1 9 has a cylindrical tenon 20 which fits within the cavity 11 and a shoulder 21 which abutsthe surface 12 of the cluster top 10. The tenon 20is locked to the cluster top 10 by means of a screw which extends laterally through the .side

of the cluster top and into the tenon 20, as clearly shown in Figs. 1 and 5.

The cavitv 11 provides a-space for the splicing 23 of the electric conduit wires-24:

which pass upwardly through the standard 19 and have branches 25 which lead through Patented 1 1210.10, 1920. ,ieiel Serial No. 29 ,358. i

rrnn snares rn rnn r orrron I .141 are drilled into the cluster top 10, prefer ably at an inclineto the axisoflthe cylinthe respective holes 14: and sleeve couplings 15 to the-lamp sockets 16. 7

The cluster top 10 has a hole '26 extending downwardly from thetop surface 13 into the cavity 11 to prov de an entrance for so I a screw 27 which is attached to a knob, 28.

Theinner endof the screw 27 projects into the cavity 11 and fits a screw threaded hole a 29 in'a spring plate SO. The spring plate 30 is preferably made ofspring steel and. is

. of such length that it must lic bowed in order to be extended transversely across the cavity 11. p v

The ends 31' of the plate 30 engage the side wall of the cavity 11 and also abut the inner surface '18 of said cavity. In other words, the plate 30 occupies a position at the innermost portion of the cavity 11 and when placed therein is bowed downwardly in the form of apart of an elliptic spring; there being a space between the surface 32 of the plate 30 and the surface 13 of the cavity 11. 1

A shade 33'has a ring 34 adapted to rest on the. upper surface 13 of the clustertop 10 and the screw 27 extends through the ring 84: so that the knob 28 abuts the upper surface of the, ring. When the knob is screwed downwardly it compresses the ring 34 of the shade between it and the surface 13 of the cluster top and at the same time pulls the spring plate 30 toward the surface 18 and thereby places the spring plate unposite. j directions.

The shade is thereby clamped to the cluster top 10 under tension, and since the screw 27 and spring plate 30 are made of metal, it is immaterial whether the hole 26 in the cluster top 10 becomes worn; the clamping action of the parts will always remain and the shade will not vibrate or become loose. y

In Fig. 8 I have shown a spring plate Which has flanges 36 at its opposite ends which can be used if preferred, since the ends will not readily dig into the wood and become looseif it is desired for use on a soft wood cluster top. V r

I Fig. 9 shows a construction of a spring plate 37 which has teeth 38 on its opposite edges, said teethvprojecting from a flange 39. lVith this construction, it is immaterial whether the teeth penetrate the wood, the flanges 89 forming stops to limit the extent of longitudinal separation of the ends of the plate. In other words, if the teeth 38 extended entirely into the wood, the flanges will form a stop to limit further piercing of the plate into the wood so as not to lose the spring action of the plate.

'By making my invention as above defrom the spirit thereof, and hence I do not limit myself to the precise construction set forth, but consider that I am at liberty to make such changes and alterations as fairly come within the scope of the appended claims.

Having thus described my invention, what I claim as new and desire to ecure by Letters Patent is p 1. A lamp support including a cluster top having a cavity therein; a normally bowed thin spring plate fitting within said cavity and having a hole therein; and a knob having a clamping screw thereon and.

extending downwardly through said cluster top into said cavity and fitting said hole in said spring plate, said hole being of less diameter, than the outer diameter of the clamping screw vhereby the clamping screw will screw lnto said hole and thereby place tension on said clamping screw to draw said knob toward the cluster top so that a portion of a shade can be held in firm engagement with said cluster top; substantially as described.

2. A lamp support including a cluster top having a cavity therein; a spring plate fitting Within said cavity and having a hole; a knob; and a clamping screw secured to said knob and extending through said cluster top and fitting said hole in said spring plate, said spring plate being bowed withinv said cavity and having its ends abutting the side of said cavity; substantially as d escribed.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses. I

MORRIS v OZLEK. VV-itnesses v CHAs. E. Por'rs, AUeUs'rUs B. Corrns. 

